Locomotive-smoke-box trap-box.



J. HERRON.

\LOCOMOT|VE SMOKE BOX TRAP 000E.

APPLICATION FILEDAPR. Z4.l i917 1,287,310. Patented Dec. 10, i918. 5 vll' J. HERRON.

LOCOMOIVE SMOKE BOX TRAP DOOR.

APPLICATION FILED APR. 24| 19|?.

Patented Dec. 10, 1918 2 SHEETS-SHEET 2 lil' onirica,

JOHN HERRON, OF MARQUETTE, DTCHIGAN.

LOCOMOTIVE-SMOKE-BOX TRAP-DOOR.

specification f Letters Patent.

.Patented Elec. il), illtitl.

Application filed April 24, 1917. Serial No. 164.138. l

To all' f/'zo/f/ it may concern.'

lle it known that I, JOHN HERRON, a cit1- zen of the Tnited States, residing at Mar fillette. in the county of Marque-tte and State ot Michigan,` have 1nvented new and useful lmprovements in Locomotive-Smoke-Box` of which the followmg is a,

Trap-Doors, specitication.

This invention relates to trap doors tted to thev spark-arresting screens of locomotive smoke boxes. and its object is to provide a novel and improved support and fastening for such a. door, whereby the same is easily and quickly applied, securely held in place, and readily removed. l

The object stated is attained bymeans of a combination and arrangement of parts to be hereinafter described and claimed, and in order that the same may be better understood. reference-is had to t-he accompanying drawimg` forming a part of this specification.

ln the drawing, Figure 1 is a vertical section showing the application of the invention; Fig, 2 is a front elevation; Fig. 3 is an enlarged vertical section on the line 3-3 of il` 2; Fig. e is an enlarged vertical Section on the line 4-4 of Fig. 2, and Fig. 5 is aff ond View of a. latch.

Referring' specifically to the drawing, 10 denotes the smoke lox of a locomotive into the exhausr` nozzle 11 extends as usual` The smoke box contains a spark-aria-- tin5 screen 12 supported-in any approved manner' and having an opening which is fitted with a removable trap door.v In this opening is mounted a door frame composed ot angle bars l2 which are set with one of. llwir tlanlrfes ll outstanding from the opening. The door is composed of a frame covered with a. nettinfr 15the frame being composed of top and lottom bars 16 and 17, and sido bars 18, these bars heiner angle irons. The netting is bolted or otherwise fastened as shown at 19 to one ot' theilanges of the anule irons, and the latter are so positioned as to leave one ol their flanges outstanding.

door seats -it its the side bars o2' 'the door't'iamo 13, and at. the top and bottom in the angle yoi the top and bottom hars of the door frame, To the outstanding ilange ot' the top bar oi' the door'lrfnnc is fastened an angle bar 20 positioned so that one ot' its flanges is downturned and opposite the other flange of tho op bar of the door trame. The door tramo "s therefor-vot a channeled construction at sides in the angle ofthe top, and the top of the gate seats loosely in this channel and is shorter than the door frame so that it may be pushed'upwardly a short distance. To the outstanding flange of the bottom bar lofthe door frame is also fastened an angle har 2l arranged in the same manner as the angle bar 20 to provide a channel for th(l reception ot the bottom edge of the door.

-A latch is provided for holding the door closed, said latch comprising the `following parts:

To the outstanding flange ot the bottom cross bar i7 of the door is fastened an outstanding bracket arm 22 which is oti'set downwardly 'from said flange to bring its bottom tlush with the outstanding flange 14 of the door frame bottom bar. To this offset portion of the bracket arm. on the under side thereof. pivoted, by a bolt or rivet 23. a latch bar Q4 oi' such length that one end mav be swung to come beneath the aforesaid flange 14, the other end of the latch bar being upturned as shown at 25 to form a hand-hold. This end of the latch bar is adapted to locked to the bracket arm by a pin or other suitable device 26 when the latch bar is in holding position. The end ot' the latchbar eng-airing the flange liis beveled at its sides to obtain a tightening etl'ect.

To remove the door. the pin 'QG is removed and the latch bar 24 is swung clear of the bottom flange 14 of the door frame, which releases the door, so that it may now be lifted bodily to clear the guard bar 21. after which it is dropped down to clear the top guard bnr 20, which completes the operation. The bottom `guard bar 21 is in tivo spaced sections to provide a recess 2'? to accommodate the latch bar. As the door seats at an angle to the center line of the smoke box and the boiler, it is of itself' prevented from vfalling out of the door 'traine by the top and bdttom guard bars. The top lguard bar not only acts as a stop tor the door, but also prevents cinders from cloggingr the channel in which the top oi the door seats, Which would prevent the easy removal of the door. The manner in which the door is set in the traine makes a tight joint, and the door can be easily removed and replaced. The structure is also strong simple and relatively inexpensive.

lWhile il o preferred embodiment of the invention has been shown. it will he understood that various changes and modilcaand durable. as vvell asf,.-

tions in the structural details may be made bottom in the aforesaid channels, said door without a departure `from the Spirit and "bein r shorter .than the frame and movable scope 'of the invention as claimed hereinbodi y in the direction of its length out of after. the channels for removal from the frame. 20 I Claim; 2. Thev combination with a door and its l. Ina door structure, a frame composed frame, -of\an outstanding bracket arm carof top, bottom and side angle bars set with ried by one end of the door, a pivoted latch oneof their flanges Outstanding, angle bars bar carried by the bracket arm and engageconnected to the outstanding flan es of the able with an adjieent portion of the door 25 top and the bottom bars and positioned to frame, the 1atter\ having all Outstanding locate one of their flanges opposite to and in flange beneath which the latch bar is adaptspaced relation with thefother flan es of said ed to be swung, and means for locking the v top and bottom bars, to produce c nnels at' latch bar to the bracket arm.' the top and the bottom of the frame, and a In testimony whereof I affix my signature. s0 door seating at its side edges in the angle of the frame slde bars, and at the top and the JOHN lHER-RON. 

